I noticed these about a week ago. She is eating and acting normally. I would like to treat her, but am unsure what it is or how to go about it. I have a 20 gallon hospital tank I could use. I have had the same fish together for the past 3 years: a blood parrot, an angel, a black ghost knife, and 7 clown loaches in a 90 gallon. Can anyone tell me what this is?